Insider Transaction Report for Thomas J. Waun Sr. of ADVANCED DRAINAGE SYSTEMS, INC.

This filing details insider transactions by Thomas J. Waun Sr., EVP, International at ADVANCED DRAINAGE SYSTEMS, INC. On May 19, 2026, Mr. Waun disposed of 117 shares of common stock at a price of $131.59 per share and acquired 4,555 shares through performance-based units. On May 20, 2026, he disposed of an additional 100 shares at $136.83 per share. These disposals were to satisfy tax obligations related to restricted stock vesting. The acquisition of 4,555 shares is linked to performance goals met for the period ending March 31, 2026. Following these transactions, Mr. Waun holds 13,253 shares directly. Additionally, he holds 807.4087 shares indirectly through the KSOP plan. The filing also notes the acquisition of 89 shares under the Employee Stock Purchase Plan.